Originally Posted by
Sixty Fiver
That is not black ice... that is an oil slick. This happens on most roads when it rains and experienced cyclists know that the most dangerous time to ride in the rain is when it starts as the roads can get slippery.
Black ice requires those freezing temperatures I spoke of.
Our roads spend most of the year wet, so the oil is regularly washed into our watersheds. (Of course this year had nice, rare extended periods of no precipitation, but that's not the norm.) At least this prevents us from having to deal with the oil slick problem. Now if only motorists would change their windshield wipers often enough to be able to see what's in front of them when it does rain...